A GPS-less on-demand mobile sink-assisted data collection in wireless sensor networks
Résumé
The autonomous data collector is a role recently
introduced to improve the performance of Wireless Sensor
Networks. When a prompt response for data processing and
offloading is necessary, i.e. in the case of event-driven networks,
a mobile flying sink could be a good option for that role.
In this paper, we introduce FreeFall, a distributed algorithm
for the autonomous navigation of a mobile collector through a
WSN for on-demand data offloading that does not rely on an
absolute coordinate system. We show that, under fairly common
circumstances, it is possible to set the trajectory of the mobile
sink and fulfill the offloading requests without the needs of
additional equipment installed on nodes.We show how our system
is preferable over more classical routing solutions especially in the
presence of localized generation of large amounts of information.
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